Detachable wheel-rim.



H. KRAFT & M. c; scHwEmm. DETA'CHABLE WHEEL RIM. PPLICQTION FELED AUGJO, 1910.

1,1635%?0. Patented Dec 14, 1915.

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INVENTORS 1 Q 0'6 a m J 54 4 WITNESSES: wi

UNITED jd'IATES PATENT @FFIGE.

HENRY P. KRAFT, OF RIDGEWOOD, AND MAXIMILIAN CHARLES SGHWEINERT, OF

WEST HOBOKEN, NEW-JERSEY.

DETACHABLE WHEEL-RIM.'

Specification of Letters Patent.

Patented Dec. 14, 1915.

Application filed August 10, 1910. Serial No. 576,581.'

To all whom it may concern:

Be it known that we, HENRY P. KRAFT, residing in Itidgewood, in the county of Bergen and State of New Jersey, and MAXI- M LIAN CHARLES SGHWEINERT, residing in \Vest Hoboken, county of Hudson, and State of New Jersey, both citizens of the United States, have invented certain new and useful Improvements in Detachable 'vided with a metal rim having a flange at one side thereof which is adapted to receive and support the side of the tire rim, and a series of wedges are introduced between the opposite side of the tire rim and the wheel rim to support the opposite side and to fixedly secure the tire rim in place upon the wheel. Such wedges or other analogous devices are usually forced into place by means of nuts acting upon bolts which for the purpose of securing additional strength and rigidity are passed through the wooden felly of the rim and are provided with a head, or other enlargement adapted to .engage theflanged side of the wheel rim. In order to provide for a suiiiciently strong connection between the nuts and bolts it is important that a certain standard size of bolt shall not be materially departed from. In automobiles of a certain size these standards impose no particular difiiculty since the wooden telly-of the wheel is of sufficient dimensions and strength to bear the strains of use, notwithstanding the weakening eiiect of a series of holes of sufficient sizeito accommodate the bolts. In small cars, however, the wooden fellies are of reduced dimensions, and the comparatively large holes necessary for the bolts are found to weaken the wheel structure. The present mvention is designed to avoid these disadvantages, and to provide a bolt of suflicient strength to withstand the strains of use, which bolt has a screwthreaded part of ample size for convenience and safety in use, while at the same time'the telly of the wheel is weakened to as small a degree as possible.

The invention includes other features of improvement which will be hereinafter pointed out.

Referring to the drawings, Figure 1 is a section of the-preferred form of the invention. Fig. 2 is a. view looking down on F ig. l with the severalrimsremoved. Fig. 3 is an outer side view of one of thewedges. Fig. 4 is an inner side view of Fig. 3.

Referring to the drawings let A indicate the wooden telly of an automobile or other wheel which is provided with a metalrim B. The rim B is. formed on its inner side with a flange C so shaped as to support one side of the tire rimD. The rim D may be of any suitable construction, but is shown as being provided with side channels designed to receive the enlarged edges of the outer shoe E of a pneumatic'tire. The tire may be held in position upon the rim D by the usual lugs or in any other manner. this forming no part of the present invention. On the side of the telly A opposite the flange C are usually provided a series of wedges F which are forced in between the rim D and the rim B by nutsG. screwing i upon the threaded ends H of bolts I. It is found in practice that the threaded ends of the bolts used in this connection must prac tically be of a certain diameter in order that" they may be provided with tl'ireads'offthe proper pitch, and that they may have sufficient strength to resist the strainsfotffuse. If the telly A in the smaller types of; ars were provided with holes of sutticient' diam eter to accommodate a bolt of the same diameter-as the threaded end H, it would be unduly weakened, in many cases beyondthe point of'safety. According to our invention we retain the proper diameter ofthe thread ed end H, but we flattenthe bodv'of th'ebolt to such a degree that it is necessary to cut away the telly in a radial direction toj'a comparatively slight extent in orderto provide a passage for the bolt. Preferably the telly is, recessed atintervals on its outer side as shown at J, the recesses conforming to the shape of the bodv'of the bolt.

. o In the rim' shown the bolt is provided on its innerend with a head K which extends outwardly, and engages a portion of the flange C of the; wheel min B. The head K may. also be connected with the wooden felly i engagement of thehead K with the rim is thereby facilitated.

by a screw L in order to prevent displacement of the bolt, although with the construction provided by the invention the screws L may be omitted. In the construction shown in the drawing thebolt lies with its outer side directly under and inc'ontact with the rim B, which is a desirable feature since the The screw-threaded end II of the bolt is its upper side lies-in the same general plane a's'theupper face of thebody portion,-while I the body portion.

the lower side of thefs crew-threaded end lies considerably below the under face of This construction provides ample room for the wedges F without reducing their proper proportions.

In assembling the wheel provided with 7 our invention as illustrated herein the bolts are placed in position and the wheel rim B is shrunk over the felly, thus holding the bolts in place. The shrinking operation is facilitated by the fact that the upper side of the screw-threaded portion H lies flush or substantially so with the top of the bolt body; i

The invention also provides an improved construction of nut G which is provided with a washer M adapted toact as a locking washer when the nut is tightened. In the construction of fastening device heretofore employed the wedge F. is provided with a vertical portion or flange N .which is formed with a recess '0 designed to receive a reduced neck P of the nut. When the nut is adjusted'in place the points or edges Q, of

i the flange N are swaged down so that the nutcannot escape. The inner shoulder R of .the nut hence limits the movement of the degree of play between the inner edge of the shoulder R, and the inner side of theflange N is not sufficient to permit the Washer from escaping from its supporting shoulder S. Preferably ,the washer extends beyond the 'preferably displaced with relation to the body portion I, asshown in Fig. 1 so that shoulder to a slight degree in order that the shoulder may not engage the face of the thereto as various modifications 'may be made therein without departing from the- I invention.

hat we claim is I Y 1. In bolts for demountable rims or the like,.the combination of a nut having a re duced portion or neck intermediate of its ends, a shoulder upon said neck of greater diameter than said neck, and a washer seating on said shoulder. f

2. In bolts for demountable rims or the like, the combination of a nut having a rounded reduced portion or neck, a shoulder at the inner and outer ends of said neck, each of said shoulders being greater in diameter than said neck, and the inner shoulder being of a diameter not less than that of the outer shoulder, and a washer having an internal diameter slightly, exceeding that of said outer shoulder and adapted to slip over the same and seat upon said inner shoulder.

3. In bolts for demountable rims or the like.

' the. combination of a nut having a reduced portion or neck intermediate of its ends, a shoulder upon said neck of greater diameter than said neck, a-washer seating on said shoulder and a wedge engaging said neck, said washer bearing against said wedge.

4. In clamping devices for demountable rims,-a bolt, a nut having a rounded reduced portion or neck, a wedge engaging said neck, said neckhaving a shoulder at its outer end to confine said wedge in place on' said neck, and another shoulder at its inner end, each of said shoulders being greater in diameter than said neck, and the inner shoulder being of a diameter not less than that of the outer shoulder, and a washer having an internal diameter slightly exceeding that of said inner shoulder, adapted to slip over said outer shoulder and seat upon said inner shoulder between said nut and wedge.

5. In clamping devices for demountable rims, abolt, a nut having a rounded reduced portion or neck, a wedge engaging said neck and inseparably connected'thereto, said neck having a shoulder at itsouter end to confine said wedge in place on said neck, and another'shoulder at its inner end, each of said shoulders being greater in diameter than said neck, and the inner shoulder being of a diameter not less than that of the outer shoulder, and a washer having an internal diameter slightly exceeding that of said inner shoulder, adapted to slip over said outer shoulder and seat upon said inner shoulder between said nut and wedge.

6. In a clampingdevice for a demountabledrim, a bolt, a Wedge, a nut having a signed our names in the presence of two subneck P, a shoulder R, said Wedge inseparascribing witnesses;

:suiis g ssssi zza s sid izcfiziizse Washer M mounted upon said shoulder and j adapted to be pressed against the side of Wrtnessesr said Wedge by said nut. J. F. WALLACE, In Witness whereof. we 1mm hereunto FRED WHITE. 

